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Composite concrete water reducing agent

A concrete water-reducing agent and composite technology, which is applied in the field of concrete admixtures, can solve the problems of poor adaptability, poor fluidity, and bleeding between the water-reducing agent and cement, and achieves overcoming functional limitations, good adaptability, and good work performance. Effect

Pending Publication Date: 2022-01-21
砼牛(上海)智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is the problem of poor fluidity and bleeding caused by the poor adaptability of the water reducer and cement.

Method used

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  • Composite concrete water reducing agent
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A preparation method of composite concrete water reducer, comprising the steps of:

[0047] S1 Weigh the raw materials according to the formula, mix 50g of polycarboxylate superplasticizer mother liquor, 2g of modified carrageenan, 5g of calcium sugar, 0.5g of silicone defoamer, 20g of sodium carboxymethylcellulose, and 60g of water at a temperature of 30 Stir evenly under the condition of ℃ to obtain a mixed liquid; the polycarboxylate superplasticizer mother liquor is a mixture of water-reducing polycarboxylate superplasticizer mother liquor and slump-preserving polycarboxylate superplasticizer mother liquor with a mass ratio of 3:1 .

[0048] S2 Add 1g of air-entraining agent to the mixed solution obtained in step S1 and stir evenly at a temperature of 30°C to obtain a composite concrete water reducer; the air-entraining agent is dodecylbenzene with a mass ratio of 1:2 A mixture of sodium sulfonate and sodium lauryl sulfate.

[0049] The preparation method of descr...

Embodiment 2

[0053] A preparation method of composite concrete water reducer, comprising the steps of:

[0054] S1 Weigh the raw materials according to the formula, mix 50g of polycarboxylate superplasticizer mother liquor, 2g of carrageenan, 5g of calcium sugar, 0.5g of silicone defoamer, 20g of modified sodium carboxymethylcellulose, and 60g of water at a temperature of Stir evenly at 30°C to obtain a mixed solution; the polycarboxylate superplasticizer mother liquor is a mixture of a water-reducing polycarboxylate superplasticizer mother liquor and a slump-preserving polycarboxylate superplasticizer mother liquor with a mass ratio of 3:1. mix.

[0055] S2 Add 1g of air-entraining agent to the mixed solution obtained in step S1 and stir evenly at a temperature of 30°C to obtain a composite concrete water reducer; the air-entraining agent is dodecylbenzene with a mass ratio of 1:2 A mixture of sodium sulfonate and sodium lauryl sulfate.

[0056] The preparation method of described modif...

Embodiment 3

[0059] A preparation method of composite concrete water reducer, comprising the steps of:

[0060] S1 Weigh the raw materials according to the formula, mix 50g of polycarboxylate superplasticizer mother liquor, 2g of modified carrageenan, 5g of calcium sugar, 0.5g of silicone defoamer, 20g of modified sodium carboxymethylcellulose, and 60g of water at temperature Stir evenly at 30°C to obtain a mixed solution; the polycarboxylate superplasticizer mother liquor is a water-reducing polycarboxylate superplasticizer mother liquor and a slump-retaining polycarboxylate superplasticizer mother liquor with a mass ratio of 3:1 the mix of.

[0061] S2 Add 1g of air-entraining agent to the mixed solution obtained in step S1 and stir evenly at a temperature of 30°C to obtain a composite concrete water reducer; the air-entraining agent is dodecylbenzene with a mass ratio of 1:2 A mixture of sodium sulfonate and sodium lauryl sulfate.

[0062] The preparation method of described modified ...

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Abstract

The invention provides a composite concrete water reducing agent which is prepared by the following steps: S1, uniformly mixing and stirring a polycarboxylic acid water reducing agent mother solution, a retarder, sugar calcium, a defoaming agent, a water-retaining agent and water to obtain a mixed solution; and S2, adding an air entraining agent into the mixed solution obtained in the step S1, and uniformly stirring to obtain the composite concrete water reducing agent. According to the invention, two polycarboxylic acid water reducing agent mother solutions are compounded, so that the functional limitation of a single-component water reducing agent is overcome, and the prepared composite concrete water reducing agent has relatively strong water-retaining property, good working performance and good adaptability to cement.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a composite concrete water reducer. Background technique [0002] Concrete has the characteristics of convenient source of raw materials, convenient construction, low energy consumption, low cost, and can consume a large amount of industrial waste. Therefore, under the reality of today's rapid technological changes, concrete is still the most used building material, especially the square of concrete in China. The volume accounts for about half of the world, and concrete admixture is one of the important components of modern concrete. The use of concrete admixtures can not only improve the working performance of fresh concrete, improve the process performance, strengthen the production process, but also improve and improve the quality and weather resistance of buildings and components, which plays a vital role in promoting the development and progress of concrete techn...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B103/30
CPCC04B40/0039C04B2103/302C04B24/383C04B24/38C04B24/32C04B24/42
Inventor 孙超孙红宾张恒春
Owner 砼牛(上海)智能科技有限公司